java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/elevator_spec3_product27.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:09:20,461 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:09:20,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:09:20,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:09:20,483 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:09:20,485 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:09:20,487 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:09:20,496 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:09:20,501 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:09:20,504 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:09:20,506 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:09:20,507 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:09:20,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:09:20,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:09:20,512 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:09:20,513 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:09:20,515 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:09:20,516 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:09:20,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:09:20,522 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:09:20,527 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:09:20,529 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:09:20,532 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:09:20,533 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:09:20,535 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:09:20,535 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:09:20,536 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:09:20,537 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:09:20,538 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:09:20,539 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:09:20,540 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:09:20,541 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:09:20,542 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:09:20,543 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:09:20,544 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:09:20,545 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:09:20,545 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:09:20,546 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:09:20,546 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:09:20,547 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:09:20,548 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:09:20,549 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 03:09:20,583 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:09:20,587 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:09:20,589 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:09:20,589 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:09:20,592 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:09:20,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:09:20,593 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:09:20,593 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:09:20,593 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:09:20,593 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:09:20,594 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:09:20,594 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:09:20,594 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:09:20,594 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:09:20,594 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:09:20,594 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:09:20,595 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:09:20,595 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:09:20,596 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:09:20,596 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:09:20,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:09:20,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:09:20,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:09:20,597 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:09:20,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:09:20,598 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:09:20,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:09:20,598 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:09:20,599 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:09:20,957 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:09:20,971 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:09:20,975 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:09:20,976 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:09:20,977 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:09:20,978 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product27.cil.c [2019-10-15 03:09:21,055 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9e765864/9a9b6a83edcd432cbd2caec474e79337/FLAG42590c2fa [2019-10-15 03:09:21,782 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:09:21,783 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product27.cil.c [2019-10-15 03:09:21,831 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9e765864/9a9b6a83edcd432cbd2caec474e79337/FLAG42590c2fa [2019-10-15 03:09:21,945 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9e765864/9a9b6a83edcd432cbd2caec474e79337 [2019-10-15 03:09:21,955 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:09:21,956 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:09:21,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:09:21,958 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:09:21,961 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:09:21,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:09:21" (1/1) ... [2019-10-15 03:09:21,965 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9aa9a2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:21, skipping insertion in model container [2019-10-15 03:09:21,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:09:21" (1/1) ... [2019-10-15 03:09:21,974 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:09:22,065 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:09:22,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:09:22,974 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:09:23,128 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:09:23,207 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:09:23,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:23 WrapperNode [2019-10-15 03:09:23,208 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:09:23,209 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:09:23,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:09:23,209 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:09:23,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:23" (1/1) ... [2019-10-15 03:09:23,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:23" (1/1) ... [2019-10-15 03:09:23,295 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:23" (1/1) ... [2019-10-15 03:09:23,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:23" (1/1) ... [2019-10-15 03:09:23,379 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:23" (1/1) ... [2019-10-15 03:09:23,422 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:23" (1/1) ... [2019-10-15 03:09:23,432 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:23" (1/1) ... [2019-10-15 03:09:23,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:09:23,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:09:23,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:09:23,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:09:23,450 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:09:23,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:09:23,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:09:23,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:09:23,531 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:09:23,532 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:09:23,533 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:09:23,533 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 03:09:23,533 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:09:23,534 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:09:23,534 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-15 03:09:23,534 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:09:23,535 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:09:23,535 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:09:23,535 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:09:23,536 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:09:23,536 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:09:23,538 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:09:23,539 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:09:23,539 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:09:23,540 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:09:23,540 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 03:09:23,541 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:09:23,541 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:09:23,541 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:09:23,541 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 03:09:23,541 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:09:23,542 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:09:23,542 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:09:23,542 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:09:23,542 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:09:23,542 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:09:23,543 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 03:09:23,543 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 03:09:23,543 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:09:23,543 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:09:23,544 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:09:23,544 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:09:23,544 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:09:23,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-15 03:09:23,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-15 03:09:23,545 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:09:23,545 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:09:23,545 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:09:23,545 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:09:23,545 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:09:23,546 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:09:23,546 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:09:23,546 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:09:23,546 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:09:23,546 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:09:23,546 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:09:23,547 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:09:23,547 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:09:23,547 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:09:23,547 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:09:23,547 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:09:23,547 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:09:23,548 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:09:23,548 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:09:23,549 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:09:23,549 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:09:23,549 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:09:23,549 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:09:23,549 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:09:23,550 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:09:23,550 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:09:23,550 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:09:23,550 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:09:23,550 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:09:23,550 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:09:23,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:09:23,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:09:23,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:09:23,552 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:09:23,552 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:09:23,552 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:09:23,553 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:09:23,553 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:09:23,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:09:23,554 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:09:23,554 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:09:23,555 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:09:23,555 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:09:23,555 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:09:23,555 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:09:23,556 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:09:23,556 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:09:23,557 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:09:23,557 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:09:23,557 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:09:23,557 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:09:23,557 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:09:23,557 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:09:23,558 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:09:23,558 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:09:23,558 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:09:23,558 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:09:23,558 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:09:23,558 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:09:23,559 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:09:23,559 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 03:09:23,559 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 03:09:23,559 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 03:09:23,559 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:09:23,560 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-15 03:09:23,560 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:09:23,560 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:09:23,560 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:09:23,560 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:09:23,561 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:09:23,561 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 03:09:23,561 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:09:23,561 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:09:23,561 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 03:09:23,561 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:09:23,562 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:09:23,562 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:09:23,562 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-15 03:09:23,563 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-15 03:09:23,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:09:23,563 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:09:23,564 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:09:23,564 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:09:23,564 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:09:23,565 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:09:23,566 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:09:23,566 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:09:23,566 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:09:23,566 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:09:23,566 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:09:23,566 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:09:23,567 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:09:23,567 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:09:23,568 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:09:23,571 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:09:23,572 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:09:23,572 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:09:23,572 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:09:23,573 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:09:23,573 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:09:23,573 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:09:23,574 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:09:23,575 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:09:23,575 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:09:23,581 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:09:23,582 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:09:23,582 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:09:23,582 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:09:23,582 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:09:23,582 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:09:23,582 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:09:23,583 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:09:23,583 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:09:23,583 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:09:23,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:09:23,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:09:23,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:09:23,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:09:23,584 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:09:23,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:09:23,585 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:09:23,585 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:09:23,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:09:23,585 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:09:23,585 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:09:23,585 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:09:23,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:09:23,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:09:23,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:09:30,156 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:09:30,156 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:09:30,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:09:30 BoogieIcfgContainer [2019-10-15 03:09:30,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:09:30,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:09:30,160 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:09:30,163 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:09:30,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:09:21" (1/3) ... [2019-10-15 03:09:30,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12afeeda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:09:30, skipping insertion in model container [2019-10-15 03:09:30,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:23" (2/3) ... [2019-10-15 03:09:30,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12afeeda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:09:30, skipping insertion in model container [2019-10-15 03:09:30,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:09:30" (3/3) ... [2019-10-15 03:09:30,167 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product27.cil.c [2019-10-15 03:09:30,177 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:09:30,187 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:09:30,199 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:09:30,234 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:09:30,234 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:09:30,235 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:09:30,235 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:09:30,235 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:09:30,235 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:09:30,235 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:09:30,236 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:09:30,274 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states. [2019-10-15 03:09:30,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-15 03:09:30,297 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:30,299 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:30,302 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:30,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:30,309 INFO L82 PathProgramCache]: Analyzing trace with hash -928932607, now seen corresponding path program 1 times [2019-10-15 03:09:30,318 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:30,319 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771366262] [2019-10-15 03:09:30,319 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:30,319 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:30,320 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:30,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:31,396 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-15 03:09:31,397 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771366262] [2019-10-15 03:09:31,398 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698177458] [2019-10-15 03:09:31,398 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:32,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:32,137 INFO L256 TraceCheckSpWp]: Trace formula consists of 3027 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 03:09:32,156 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:32,240 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-15 03:09:32,241 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:32,491 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:09:32,491 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:09:32,491 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 13 [2019-10-15 03:09:32,492 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316084075] [2019-10-15 03:09:32,498 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:09:32,499 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:32,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:09:32,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:09:32,517 INFO L87 Difference]: Start difference. First operand 600 states. Second operand 4 states. [2019-10-15 03:09:34,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:34,350 INFO L93 Difference]: Finished difference Result 1716 states and 2631 transitions. [2019-10-15 03:09:34,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:09:34,360 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2019-10-15 03:09:34,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:34,393 INFO L225 Difference]: With dead ends: 1716 [2019-10-15 03:09:34,394 INFO L226 Difference]: Without dead ends: 1238 [2019-10-15 03:09:34,404 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:09:34,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2019-10-15 03:09:34,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 1197. [2019-10-15 03:09:34,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1197 states. [2019-10-15 03:09:34,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1811 transitions. [2019-10-15 03:09:34,709 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1811 transitions. Word has length 119 [2019-10-15 03:09:34,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:34,711 INFO L462 AbstractCegarLoop]: Abstraction has 1197 states and 1811 transitions. [2019-10-15 03:09:34,711 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:09:34,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1811 transitions. [2019-10-15 03:09:34,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-15 03:09:34,738 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:34,740 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:34,958 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:34,959 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:34,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:34,959 INFO L82 PathProgramCache]: Analyzing trace with hash 512852373, now seen corresponding path program 1 times [2019-10-15 03:09:34,960 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:34,960 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538381953] [2019-10-15 03:09:34,960 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:34,960 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:34,960 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:35,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:35,405 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:09:35,406 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538381953] [2019-10-15 03:09:35,406 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:09:35,406 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:09:35,407 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569464101] [2019-10-15 03:09:35,408 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:09:35,408 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:35,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:09:35,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:09:35,409 INFO L87 Difference]: Start difference. First operand 1197 states and 1811 transitions. Second operand 7 states. [2019-10-15 03:09:41,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:41,194 INFO L93 Difference]: Finished difference Result 4586 states and 7122 transitions. [2019-10-15 03:09:41,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-15 03:09:41,195 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2019-10-15 03:09:41,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:41,242 INFO L225 Difference]: With dead ends: 4586 [2019-10-15 03:09:41,242 INFO L226 Difference]: Without dead ends: 3420 [2019-10-15 03:09:41,254 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:09:41,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3420 states. [2019-10-15 03:09:41,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3420 to 3318. [2019-10-15 03:09:41,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3318 states. [2019-10-15 03:09:41,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3318 states to 3318 states and 5136 transitions. [2019-10-15 03:09:41,494 INFO L78 Accepts]: Start accepts. Automaton has 3318 states and 5136 transitions. Word has length 119 [2019-10-15 03:09:41,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:41,495 INFO L462 AbstractCegarLoop]: Abstraction has 3318 states and 5136 transitions. [2019-10-15 03:09:41,495 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:09:41,495 INFO L276 IsEmpty]: Start isEmpty. Operand 3318 states and 5136 transitions. [2019-10-15 03:09:41,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-15 03:09:41,508 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:41,508 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:41,508 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:41,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:41,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1445388631, now seen corresponding path program 1 times [2019-10-15 03:09:41,510 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:41,510 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783694558] [2019-10-15 03:09:41,510 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:41,510 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:41,510 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:42,015 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-15 03:09:42,015 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783694558] [2019-10-15 03:09:42,016 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333063197] [2019-10-15 03:09:42,016 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:42,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:42,569 INFO L256 TraceCheckSpWp]: Trace formula consists of 3028 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 03:09:42,580 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:42,784 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-15 03:09:42,785 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:43,089 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:09:43,319 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:09:43,319 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:09:43,319 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 7] total 20 [2019-10-15 03:09:43,320 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501204314] [2019-10-15 03:09:43,320 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 03:09:43,321 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:43,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 03:09:43,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-15 03:09:43,322 INFO L87 Difference]: Start difference. First operand 3318 states and 5136 transitions. Second operand 6 states. [2019-10-15 03:09:45,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:45,641 INFO L93 Difference]: Finished difference Result 8775 states and 13818 transitions. [2019-10-15 03:09:45,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:09:45,643 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2019-10-15 03:09:45,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:45,719 INFO L225 Difference]: With dead ends: 8775 [2019-10-15 03:09:45,720 INFO L226 Difference]: Without dead ends: 5488 [2019-10-15 03:09:45,763 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 232 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-15 03:09:45,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5488 states. [2019-10-15 03:09:45,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5488 to 5449. [2019-10-15 03:09:45,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5449 states. [2019-10-15 03:09:46,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5449 states to 5449 states and 8293 transitions. [2019-10-15 03:09:46,026 INFO L78 Accepts]: Start accepts. Automaton has 5449 states and 8293 transitions. Word has length 120 [2019-10-15 03:09:46,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:46,027 INFO L462 AbstractCegarLoop]: Abstraction has 5449 states and 8293 transitions. [2019-10-15 03:09:46,027 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 03:09:46,027 INFO L276 IsEmpty]: Start isEmpty. Operand 5449 states and 8293 transitions. [2019-10-15 03:09:46,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-15 03:09:46,030 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:46,031 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:46,239 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:46,239 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:46,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:46,240 INFO L82 PathProgramCache]: Analyzing trace with hash 324873346, now seen corresponding path program 1 times [2019-10-15 03:09:46,240 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:46,240 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154262645] [2019-10-15 03:09:46,241 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:46,241 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:46,241 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:46,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:46,622 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-15 03:09:46,622 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154262645] [2019-10-15 03:09:46,623 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089475058] [2019-10-15 03:09:46,623 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:47,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:47,351 INFO L256 TraceCheckSpWp]: Trace formula consists of 3016 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 03:09:47,364 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:47,456 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:09:47,456 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:47,694 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:09:47,695 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:09:47,695 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-15 03:09:47,696 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093509831] [2019-10-15 03:09:47,698 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:09:47,698 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:47,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:09:47,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:09:47,699 INFO L87 Difference]: Start difference. First operand 5449 states and 8293 transitions. Second operand 3 states. [2019-10-15 03:09:48,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:48,019 INFO L93 Difference]: Finished difference Result 12119 states and 18577 transitions. [2019-10-15 03:09:48,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:09:48,019 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2019-10-15 03:09:48,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:48,084 INFO L225 Difference]: With dead ends: 12119 [2019-10-15 03:09:48,085 INFO L226 Difference]: Without dead ends: 6701 [2019-10-15 03:09:48,123 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 240 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:09:48,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6701 states. [2019-10-15 03:09:48,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6701 to 5371. [2019-10-15 03:09:48,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5371 states. [2019-10-15 03:09:48,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5371 states to 5371 states and 8143 transitions. [2019-10-15 03:09:48,460 INFO L78 Accepts]: Start accepts. Automaton has 5371 states and 8143 transitions. Word has length 119 [2019-10-15 03:09:48,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:48,461 INFO L462 AbstractCegarLoop]: Abstraction has 5371 states and 8143 transitions. [2019-10-15 03:09:48,461 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:09:48,462 INFO L276 IsEmpty]: Start isEmpty. Operand 5371 states and 8143 transitions. [2019-10-15 03:09:48,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-15 03:09:48,473 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:48,473 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:48,777 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:48,778 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:48,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:48,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1195362687, now seen corresponding path program 1 times [2019-10-15 03:09:48,779 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:48,779 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614545490] [2019-10-15 03:09:48,779 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:48,779 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:48,780 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:49,376 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-15 03:09:49,378 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614545490] [2019-10-15 03:09:49,378 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:09:49,379 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 03:09:49,379 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086129698] [2019-10-15 03:09:49,381 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 03:09:49,381 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:49,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 03:09:49,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:09:49,385 INFO L87 Difference]: Start difference. First operand 5371 states and 8143 transitions. Second operand 10 states. [2019-10-15 03:09:53,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:53,878 INFO L93 Difference]: Finished difference Result 19676 states and 30693 transitions. [2019-10-15 03:09:53,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-15 03:09:53,880 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 125 [2019-10-15 03:09:53,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:54,061 INFO L225 Difference]: With dead ends: 19676 [2019-10-15 03:09:54,061 INFO L226 Difference]: Without dead ends: 14336 [2019-10-15 03:09:54,117 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2019-10-15 03:09:54,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14336 states. [2019-10-15 03:09:54,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14336 to 14006. [2019-10-15 03:09:54,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14006 states. [2019-10-15 03:09:54,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14006 states to 14006 states and 21673 transitions. [2019-10-15 03:09:54,926 INFO L78 Accepts]: Start accepts. Automaton has 14006 states and 21673 transitions. Word has length 125 [2019-10-15 03:09:54,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:54,927 INFO L462 AbstractCegarLoop]: Abstraction has 14006 states and 21673 transitions. [2019-10-15 03:09:54,927 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 03:09:54,927 INFO L276 IsEmpty]: Start isEmpty. Operand 14006 states and 21673 transitions. [2019-10-15 03:09:54,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-15 03:09:54,932 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:54,932 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:54,932 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:54,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:54,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1826143901, now seen corresponding path program 1 times [2019-10-15 03:09:54,933 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:54,933 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760115410] [2019-10-15 03:09:54,934 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:54,934 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:54,934 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:55,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:55,282 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 03:09:55,283 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760115410] [2019-10-15 03:09:55,283 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704259561] [2019-10-15 03:09:55,283 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:56,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:56,699 INFO L256 TraceCheckSpWp]: Trace formula consists of 3058 conjuncts, 21 conjunts are in the unsatisfiable core [2019-10-15 03:09:56,708 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:56,877 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-15 03:09:56,877 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:57,185 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 03:09:57,185 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:09:57,185 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 17 [2019-10-15 03:09:57,186 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853110561] [2019-10-15 03:09:57,187 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:09:57,187 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:57,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:09:57,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2019-10-15 03:09:57,188 INFO L87 Difference]: Start difference. First operand 14006 states and 21673 transitions. Second operand 7 states.